{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:VALI2D7IMMZNUKRZWVOONZ6QZY","short_pith_number":"pith:VALI2D7I","schema_version":"1.0","canonical_sha256":"a8168d0fe86332da2a39b55ce6e7d0ce24ae65804b2d07a18eec71a4533e6dcb","source":{"kind":"arxiv","id":"1608.03529","version":1},"attestation_state":"computed","paper":{"title":"Dynamical co-existence of excitons and free carriers in perovskite probed by density-resolved fluorescent spectroscopic method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Kai Wang, Lixin Xiao, Qihuang Gong, Shufeng Wang, Wei Wang, Xiangyuan Wang, Yanping Lv, Yantao Shi, Yu Li, Zhijian Chen","submitted_at":"2016-08-09T21:10:50Z","abstract_excerpt":"Using transient fluorescent spectra at time-zero, we develop a density-resolved fluorescent spectroscopic method for investigating photoproducts in CH3NH3PbI3 perovskite and related photophysics. The density dependent dynamical co-existence of excitons and free carriers over a wide density range is experimentally observed for the first time. The exciton binding energy (EB) and the effective mass of electron-hole pair can be estimated based on such co-existence. No ionic polarization is found contributing to photophysical behavior. It also solves the conflict between the large experimentally me"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1608.03529","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-08-09T21:10:50Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"01809e7997d0dd6ad52771a4836dc410a6447a643a0cc962b9a22fdaca269e48","abstract_canon_sha256":"10737adb355ab08ee9cf50003b899e24802e5ce6ad4b3af9e6f8d4029969dbac"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:57:39.363555Z","signature_b64":"dMSEAATBHHa4BMGuJIFceP0QjJ1k6xcnuzXwA8WaCYqXAYpRubAn4kDBU7VFMnOcxmeDNNoxGLX47TzZ+K3MAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a8168d0fe86332da2a39b55ce6e7d0ce24ae65804b2d07a18eec71a4533e6dcb","last_reissued_at":"2026-05-18T00:57:39.362962Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:57:39.362962Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Dynamical co-existence of excitons and free carriers in perovskite probed by density-resolved fluorescent spectroscopic method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Kai Wang, Lixin Xiao, Qihuang Gong, Shufeng Wang, Wei Wang, Xiangyuan Wang, Yanping Lv, Yantao Shi, Yu Li, Zhijian Chen","submitted_at":"2016-08-09T21:10:50Z","abstract_excerpt":"Using transient fluorescent spectra at time-zero, we develop a density-resolved fluorescent spectroscopic method for investigating photoproducts in CH3NH3PbI3 perovskite and related photophysics. The density dependent dynamical co-existence of excitons and free carriers over a wide density range is experimentally observed for the first time. The exciton binding energy (EB) and the effective mass of electron-hole pair can be estimated based on such co-existence. No ionic polarization is found contributing to photophysical behavior. It also solves the conflict between the large experimentally me"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.03529","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1608.03529","created_at":"2026-05-18T00:57:39.363053+00:00"},{"alias_kind":"arxiv_version","alias_value":"1608.03529v1","created_at":"2026-05-18T00:57:39.363053+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.03529","created_at":"2026-05-18T00:57:39.363053+00:00"},{"alias_kind":"pith_short_12","alias_value":"VALI2D7IMMZN","created_at":"2026-05-18T12:30:48.956258+00:00"},{"alias_kind":"pith_short_16","alias_value":"VALI2D7IMMZNUKRZ","created_at":"2026-05-18T12:30:48.956258+00:00"},{"alias_kind":"pith_short_8","alias_value":"VALI2D7I","created_at":"2026-05-18T12:30:48.956258+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VALI2D7IMMZNUKRZWVOONZ6QZY","json":"https://pith.science/pith/VALI2D7IMMZNUKRZWVOONZ6QZY.json","graph_json":"https://pith.science/api/pith-number/VALI2D7IMMZNUKRZWVOONZ6QZY/graph.json","events_json":"https://pith.science/api/pith-number/VALI2D7IMMZNUKRZWVOONZ6QZY/events.json","paper":"https://pith.science/paper/VALI2D7I"},"agent_actions":{"view_html":"https://pith.science/pith/VALI2D7IMMZNUKRZWVOONZ6QZY","download_json":"https://pith.science/pith/VALI2D7IMMZNUKRZWVOONZ6QZY.json","view_paper":"https://pith.science/paper/VALI2D7I","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1608.03529&json=true","fetch_graph":"https://pith.science/api/pith-number/VALI2D7IMMZNUKRZWVOONZ6QZY/graph.json","fetch_events":"https://pith.science/api/pith-number/VALI2D7IMMZNUKRZWVOONZ6QZY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VALI2D7IMMZNUKRZWVOONZ6QZY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VALI2D7IMMZNUKRZWVOONZ6QZY/action/storage_attestation","attest_author":"https://pith.science/pith/VALI2D7IMMZNUKRZWVOONZ6QZY/action/author_attestation","sign_citation":"https://pith.science/pith/VALI2D7IMMZNUKRZWVOONZ6QZY/action/citation_signature","submit_replication":"https://pith.science/pith/VALI2D7IMMZNUKRZWVOONZ6QZY/action/replication_record"}},"created_at":"2026-05-18T00:57:39.363053+00:00","updated_at":"2026-05-18T00:57:39.363053+00:00"}